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/*
* libjingle
* Copyright 2004--2008, Google Inc.
* Copyright 2012, RTFM, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <vector>
#if HAVE_CONFIG_H
#include "config.h"
#endif // HAVE_CONFIG_H
#include "talk/base/sslstreamadapterhelper.h"
#include "talk/base/common.h"
#include "talk/base/logging.h"
#include "talk/base/stream.h"
namespace talk_base {
void SSLStreamAdapterHelper::SetIdentity(SSLIdentity* identity) {
ASSERT(identity_.get() == NULL);
identity_.reset(identity);
}
void SSLStreamAdapterHelper::SetServerRole(SSLRole role) {
role_ = role;
}
int SSLStreamAdapterHelper::StartSSLWithServer(const char* server_name) {
ASSERT(server_name != NULL && server_name[0] != '\0');
ssl_server_name_ = server_name;
return StartSSL();
}
int SSLStreamAdapterHelper::StartSSLWithPeer() {
ASSERT(ssl_server_name_.empty());
// It is permitted to specify peer_certificate_ only later.
return StartSSL();
}
void SSLStreamAdapterHelper::SetMode(SSLMode mode) {
ASSERT(state_ == SSL_NONE);
ssl_mode_ = mode;
}
StreamState SSLStreamAdapterHelper::GetState() const {
switch (state_) {
case SSL_WAIT:
case SSL_CONNECTING:
return SS_OPENING;
case SSL_CONNECTED:
return SS_OPEN;
default:
return SS_CLOSED;
};
// not reached
}
void SSLStreamAdapterHelper::SetPeerCertificate(SSLCertificate* cert) {
ASSERT(peer_certificate_.get() == NULL);
ASSERT(peer_certificate_digest_algorithm_.empty());
ASSERT(ssl_server_name_.empty());
peer_certificate_.reset(cert);
}
bool SSLStreamAdapterHelper::GetPeerCertificate(SSLCertificate** cert) const {
if (!peer_certificate_)
return false;
*cert = peer_certificate_->GetReference();
return true;
}
bool SSLStreamAdapterHelper::SetPeerCertificateDigest(
const std::string &digest_alg,
const unsigned char* digest_val,
size_t digest_len) {
ASSERT(peer_certificate_.get() == NULL);
ASSERT(peer_certificate_digest_algorithm_.empty());
ASSERT(ssl_server_name_.empty());
size_t expected_len;
if (!GetDigestLength(digest_alg, &expected_len)) {
LOG(LS_WARNING) << "Unknown digest algorithm: " << digest_alg;
return false;
}
if (expected_len != digest_len)
return false;
peer_certificate_digest_value_.SetData(digest_val, digest_len);
peer_certificate_digest_algorithm_ = digest_alg;
return true;
}
void SSLStreamAdapterHelper::Error(const char* context, int err, bool signal) {
LOG(LS_WARNING) << "SSLStreamAdapterHelper::Error("
<< context << ", " << err << "," << signal << ")";
state_ = SSL_ERROR;
ssl_error_code_ = err;
Cleanup();
if (signal)
StreamAdapterInterface::OnEvent(stream(), SE_CLOSE, err);
}
void SSLStreamAdapterHelper::Close() {
Cleanup();
ASSERT(state_ == SSL_CLOSED || state_ == SSL_ERROR);
StreamAdapterInterface::Close();
}
int SSLStreamAdapterHelper::StartSSL() {
ASSERT(state_ == SSL_NONE);
if (StreamAdapterInterface::GetState() != SS_OPEN) {
state_ = SSL_WAIT;
return 0;
}
state_ = SSL_CONNECTING;
int err = BeginSSL();
if (err) {
Error("BeginSSL", err, false);
return err;
}
return 0;
}
} // namespace talk_base
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